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Tag: "swallows" at biology news

Looks matter to female barn swallows

... Science (Sept. 30, 2005). "The bad news for male swallows is the mating game is never over," said lead autho...ty-red. Like many songbirds, half of all male barn swallows typically care for at least one young chick that was actually fathered by another bird. The research...

The ecological effects of the Chernobyl disaster

...of radiation for reproduction and survival of barn swallows Hirundo rustica from Chernobyl." Barn swallows are long-distance migratory birds, which nest across Europe, providing researchers with numerous pop...

Worms know bad food when they smell it

...ake ideal worm food, others are toxic. "The worm swallows them and then they establish an infection inside the worm's gut and they proliferate there. It's exactly like food poisoning," Bargmann explained. If the worm has ingested enough of the bacteria, it can die quickly, but milder cases allow the worm to...

New GI technologies improve internal organ visualization

...eeding. During a capsule endoscopy, the patient swallows a small camera that records images of the intestinal tract. To complete a double balloon enteroscopy, doctors use a scope fitted with two balloons to navigate the entire small bowel. When inflated with air, the balloons can expand sections of the s...

Hopkins researchers discover how brain protein might control memory

...icals. The cell that captures these chemicals then swallows up the receptor-chemical complexes, removing the receptors from the cell's surface. The more receptors present, according to Worley, the stronger the connection between the two cells. New receptors constantly replace the swallowed-up ones. The tw...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

...lls through a process called endocytosis ?the cell swallows or engulfs a molecule that is outside of it. The biologists attempted to mimic that process by removing the wall of the plant cell (called making protoplasts), forcing it to behave like an animal cell and swallow the nanoparticle. It didn’t work. ...

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